20131440

Names of 20131440

• Cardinal: 20131440 can be written as Twenty million, one hundred thirty-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.013144 × 10⁷

Factors of 20131440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 561

Divisors of 20131440

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 23 24 28 30 35 40 42 46 48 56 60 69 70 80 84 92 105 112 115 120 138 140 161 168 184 210 230 240 276 280 322 336 345 368 420 460 483 521 552 560 644 690 805 840 920 966 1042 1104 1288 1380 1563 1610 1680 1840 1932 2084 2415 2576 2605 2760 3126 3220 3647 3864 4168 4830 5210 5520 6252 6440 7294 7728 7815 8336 9660 10420 10941 11983 12504 12880 14588 15630 18235 19320 20840 21882 23966 25008 29176 31260 35949 36470 38640 41680 43764 47932 54705 58352 59915 62520 71898 72940 83881 87528 95864 109410 119830 125040 143796 145880 167762 175056 179745 191728 218820 239660 251643 287592 291760 335524 359490 419405 437640 479320 503286 575184 671048 718980 838810 875280 958640 1006572 1258215 1342096 1437960 1677620 2013144 2516430 2875920 3355240 4026288 5032860 6710480 10065720 20131440
• Sum of all divisors σ(n): 74566656
• Sum of proper divisors (its aliquot sum) s(n): 54435216
• 20131440 is an abundant number, because the sum of its proper divisors (54435216) is greater than itself. Its abundance is 34303776

Bases of 20131440

• Binary: 1001100110010111001110000₂
• Hexadecimal: 0x1332E70
• Base-36: BZHIO

Squares and roots of 20131440

• 20131440 squared (20131440²) is 405274876473600
• 20131440 cubed (20131440³) is 8158766859235689984000
• The square root of 20131440 is 4486.8073281567
• The cube root of 20131440 is 272.0351021595

Scales and comparisons

• 20,131,440 seconds is equal to 33 weeks, 2 days, 4 minutes.
• To count from 1 to 20,131,440 would take you about forty-nine weeks!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 20131440 cubic inches would be around 22.7 feet tall.

Recreational maths with 20131440

• 20131440 backwards is 04413102
• 20131440 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20131440's digits is 15
• More coming soon!